Cain got his rematch with one convincing win, Junior should ge the exact same chance.
What we've learned from these two fight. Junior can KO Cain with one punch... and Cain can stick to Junior for 25 minutes and still not finish him. Junior is owed his rematch sooner than later.
Junior with one extra win doesn't qualify him over Werdum and Overeem if they win their next fights.
Cain only got the shot cos there was nobody else in the title picture. The same can't be said for the current HW scene.